you need a helms manual ASAP!
FYI - I had to remove 3 bolts to remove the battery tray to get at the grommet for the main wiring harness...on my '97 civic ex coupe.No and no. To access the hole, you need to remove the battery and the battery tray (it just rests in there, no bolts holding the tray).
Once you remove those 2, if you look on the firewall, just under where the battery sits, you'll see a rubber grommet in an oval shape.